<!DOCTYPE html>
<html lang="en">
	<head>
		<title>Tween.js / yoyo</title>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
		<link href="css/style.css" media="screen" rel="stylesheet" type="text/css" />
	</head>
	<body>
		<div id="info">
			<h1><a href="http://github.com/tweenjs/tween.js">tween.js</a></h1>
			<h2>10 _ yoyo</h2>
			<p>Demonstrating the yoyo() feature.</p>
			<button onclick="restart()">restart</button>
			<button onclick="stop()">stop</button>
			<button onclick="start()">start</button>
			<button onclick="pause()">pause</button>
			<button onclick="resume()">resume</button>
		</div>
		<div style="position: absolute; top: 100px; left: 400px;">
			<div id="target1" data-rotation="0" data-y="0" class="box" style="left: 0px; top: 0px;">
				yoyo with repeat once
			</div>
			<div id="target2" data-rotation="0" data-y="0" class="box" style="left: 200px; top: 0px;">
				yoyo with repeat forever
			</div>
			<div id="target3" data-rotation="0" data-y="0" class="box" style="left: 400px; top: 0px;">
				yoyo with repeat once, relative values
			</div>
			<div id="target4" data-rotation="0" data-y="0" class="box" style="left: 600px; top: 0px;">
				yoyo with repeat forever, relative values
			</div>
		</div>

		<script src="../dist/tween.umd.js"></script>
		<script src="js/RequestAnimationFrame.js"></script>
		<script>
			init()
			animate()

			var restart, stop, start, pause, resume

			function init() {
				var target1 = document.getElementById('target1')
				var tween1 = new TWEEN.Tween(target1.dataset)
					.to({rotation: 360, y: 300}, 750)
					.repeat(1)
					.delay(1000)
					.yoyo(true)
					.easing(TWEEN.Easing.Cubic.InOut)
					.onUpdate(function (object) {
						updateBox(target1, object)
					})
					.start()
				var target2 = document.getElementById('target2')
				var tween2 = new TWEEN.Tween(target2.dataset)
					.to({rotation: 360, y: 300}, 750)
					.repeat(Infinity)
					.delay(1000)
					.yoyo(true)
					.easing(TWEEN.Easing.Cubic.InOut)
					.onUpdate(function (object) {
						updateBox(target2, object)
					})
					.start()
				var target3 = document.getElementById('target3')
				var tween3 = new TWEEN.Tween(target3.dataset)
					.to({rotation: '+360', y: '+300'}, 750)
					.repeat(1)
					.delay(1000)
					.yoyo(true)
					.easing(TWEEN.Easing.Cubic.InOut)
					.onUpdate(function (object) {
						updateBox(target3, object)
					})
					.start()
				var target4 = document.getElementById('target4')
				var tween4 = new TWEEN.Tween(target4.dataset)
					.to({rotation: '+360', y: '+300'}, 750)
					.repeat(Infinity)
					.delay(1000)
					.yoyo(true)
					.easing(TWEEN.Easing.Cubic.InOut)
					.onUpdate(function (object) {
						updateBox(target4, object)
					})
					.start()

				restart = function () {
					tween1.stop().start()
					tween2.stop().start()
					tween3.stop().start()
					tween4.stop().start()
				}

				stop = function () {
					tween1.stop()
					tween2.stop()
					tween3.stop()
					tween4.stop()
				}

				start = function () {
					tween1.start()
					tween2.start()
					tween3.start()
					tween4.start()
				}

				pause = function () {
					tween1.pause()
					tween2.pause()
					tween3.pause()
					tween4.pause()
				}

				resume = function () {
					tween1.resume()
					tween2.resume()
					tween3.resume()
					tween4.resume()
				}
			}

			function animate(time) {
				requestAnimationFrame(animate)

				TWEEN.update(time)
			}

			function updateBox(box, params) {
				var s = box.style,
					transform = 'translateY(' + Math.round(params.y) + 'px) rotate(' + Math.floor(params.rotation) + 'deg)'
				s.webkitTransform = transform
				s.mozTransform = transform
				s.transform = transform
			}
		</script>

		<style type="text/css">
			.box {
				width: 100px;
				height: 100px;
				display: flex;
				flex-flow: row;
				align-items: center;
				text-align: center;
				-webkit-border-radius: 70px;
				-moz-border-radius: 70px;
				border-radius: 70px;
				position: absolute;
				border: 1px solid black;
				font-size: 10px;
				padding: 20px;
			}
			#target1 {
				background: #fcc;
			}
			#target2 {
				background: #cfc;
			}
			#target3 {
				background: orange;
			}
			#target4 {
				background: skyblue;
			}
		</style>
	</body>
</html>
